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There is no doubt the acceptance and growing popularity of Linux on Power is here. With POWER based systems providing advantages over x86 systems in performance, capacity, memory and IO bandwidth, and reliability (I have intentionally left out the CAPI technology and am saying that discussion for another BLOG that can delve into that and the incredible capabilities it provides) and with the latest Linux distributions from RedHat, SUSE, and Ubuntu exploiting POWER8 technology, customers are now looking at hosting mission... [More]

A new update release for the 7.0 series of the IBM Advance Toolchain for Linux on Power is now available. This is a maintenance release for the 7.0 series (7.0-7) and contains a series of fixes: The GNU C Library provides:
Fixes for the following vulnerabilities: CVE-2015-1472/CVE-2015-1473 , CVE-2015-1781 , CVE-2013-7423 and CVE-2014-8121 . Fix for pow() returning incorrect results when using FMA . OpenSSL provides 14 security advisories . For download links, more information and documentation, please refer to our... [More]

Oracle has confirmed that a release of the 12cR1 Instant Clients for Linux on Power Little Endian is now planned for release. Please review the Instant Client section of document "Release Schedule of Current Database Releases (Doc ID 742060.1)" found on My Oracle Support for this update. To find this document log on to My Oracle Support , and search for the document id 742060.1. To review the use and capabilities of the 12c Instant Clients refer to the Oracle Database Instant Client... [More]

The Generic Work Queue Engine (GenWQE) Linux device driver supports the PCIe3 LP FPGA Accelerator Adapter (FC EJ13; CCIN 59AB) by implementing a work queue to offload tasks to the Field Programmable Gate Array (FPGA). This PDF describes in detail how the hardware and associated userspace library is implemented. It also provides details to application developers about developing an application to take advantage of the gzip compression provided by this hardware. GenWQE-GZIP-for-Linux-Doc.pdf | View Details

This is the second part in a series of articles on the topic: Using the IBM SDK for Linux on Power to improve the performance of a large open source project where I will be using the Migration Advisor . Here we continue exploring the performance of the PHP open source project by looking for the tell-tale signs of missing optimization for the POWER platform in the source. The Migration Advisor (MA) looks for examples in the code where it uses Intel inline assembler or Intel-specific compiler built-ins. And where this Intel specific... [More]

A new update release for the 8.0 series of the IBM Advance Toolchain for Linux on Power is now available. This is the first release with support to RHEL6 cross-compiler and Ubuntu 14.10. It also provides: Support for lock elision on glibc. The GNU C Library provides:
Fixes for the following vulnerabilities: CVE-2015-1472/CVE-2015-1473 and CVE-2015-1781 . Fix for pow() returning incorrect results when using FMA . OpenSSL provides 14 security advisories . Inclusion of Go tools . For download links, more information and documentation, please... [More]

When I started this Zen and art of PowerLinux Performance series I had the best of intentions to contribute regularly. Then I got busy; with enabling Little Endian for Power 64-bit, which required a new ABI , plus coordinating the enablement of all the pieces of the toolchain for the new target and platform, and then supporting the bring up of multiple Linux Distributions. Now we are mostly past the “ when will we get Distro X on hardware Y ?” and we are deep into the “ How do I tune my application for POWER?” and... [More]

Jason Furmanek has published a nice article on his experiences and insights in setting up a NIM server (more typically done with AIX installations..) to install RHEL 6 on a Power system. If you're an AIX customer - this could be very beneficial.... Questions are welcome on the forums. This page emerged from an ongoing discussion on the forums. From his article.. The process of booting and installing a Linux server from the network is valuable for many reasons. It is efficient,... [More]

Using GRE with PowerKVM 2.1.1 – A Openstack Neutron Lab Simulation. Before we begin there are few things to note: 1. OpenVswitch can be configured both as a FLOW as well as a NORMAL switch. 2. By default every switch created using “add-br” is a NORMAL vswitch. 3. This is not a GRE tutorial but a hands-on lab to create a host to host GRE tunnel and prove that it works via Virtual Machine connectivity and requires the primary knowledge of GRE. Typical Openstack installations create 3 bridges – br-int/br-tun and br-ex. Each... [More]